/**
 *  Copyright (C) 2008-2013  Telosys project org. ( http://www.telosys.org/ )
 *
 *  Licensed under the GNU LESSER GENERAL PUBLIC LICENSE, Version 3.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *          http://www.gnu.org/licenses/lgpl.html
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.telosys.common.config;

import java.util.Properties;

import org.telosys.common.logger.TelosysClassLogger;

/**
 * The Telosys configuration holder ( keep the unique instance of the configuration )
 * 
 * @author Laurent GUERIN
 * @since 1.2.0
 * 
 */
public class TelosysConfigHolder 
{
    private static final TelosysClassLogger $log            = new TelosysClassLogger(TelosysConfigHolder.class);

    //--- Instance of the "Framework Internal Factory"
    private static TelosysConfig            $telosysConfig  = null ;

    //-----------------------------------------------------------------------------
    /**
     * Initializes the current configuration
     * @param telosysConfig
     */
    public static void init(TelosysConfig telosysConfig)
    {
    	$log.info("init(TelosysConfig)...");
    	if ( null == telosysConfig ) {
    		throw new IllegalArgumentException("TelosysConfig is null");
    	}
    	$telosysConfig = telosysConfig ;
    }
    
    //-----------------------------------------------------------------------------
    /**
     * Returns the current configuration 
     * @return the current configuration 
     */
    public static TelosysConfig getConfig()
    {
        return $telosysConfig;
    }

    //-----------------------------------------------------------------------------
    /**
     * Returns the Telosys configuration properties ( loaded from the 'telosys.properties' file )
     * @return the properties
     */
    public static Properties getProperties()
    {
    	if ( $telosysConfig != null ) {
    		return $telosysConfig.getProperties() ;
    	}
        return null ;
    }
}
